org.neo4j.graphdb.Node.removeProperty()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中org.neo4j.graphdb.Node.removeProperty()方法的一些代码示例，展示了Node.removeProperty()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Node.removeProperty()方法的具体详情如下：
包路径：org.neo4j.graphdb.Node
类名称：Node
方法名：removeProperty

Node.removeProperty介绍

暂无

代码示例

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void shouldHandleRemovePropertyConcurrentlyWithIndexDrop() throws Throwable
  3. {
  4.   shouldHandleIndexDropConcurrentlyWithOperation( nodeId -> db.getNodeById( nodeId ).removeProperty( KEY ) );
  5. }

代码示例来源：origin: neo4j/neo4j

  1. @SuppressWarnings( "boxing" )
  2. @Override
  3. public Void beforeCommit( TransactionData data )
  4. {
  5.   if ( Iterables.count( data.createdRelationships() ) == 0 )
  6.   {
  7.     return null;
  8.   }
  9.   node.setProperty( "counter", ((Long) node.removeProperty( "counter" )) + 1 );
  10.   return null;
  11. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void largeTx()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "anchor", "hi" );
  6.   for ( int i = 0; i < 255; i++ )
  7.   {
  8.     node.setProperty( "foo", 1 );
  9.     node.removeProperty( "foo" );
  10.   }
  11.   commit();
  12. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void addAndRemovePropertiesWithinOneTransaction()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "name", "oscar" );
  6.   node.setProperty( "favourite_numbers", new Long[] { 1L, 2L, 3L } );
  7.   node.setProperty( "favourite_colors", new String[] { "blue", "red" } );
  8.   node.removeProperty( "favourite_colors" );
  9.   newTransaction();
  10.   assertNotNull( node.getProperty( "favourite_numbers", null ) );
  11. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testNodeRemoveProperty()
  3. {
  4.   Node node1 = getGraphDb().getNodeById( node1Id );
  5.   Node node2 = getGraphDb().getNodeById( node2Id );
  6.   Relationship rel = node1.getSingleRelationship( MyRelTypes.TEST,
  7.     Direction.BOTH );
  8.   // test remove property
  9.   assertEquals( 1, node1.removeProperty( key1 ) );
  10.   assertEquals( 2, node2.removeProperty( key1 ) );
  11.   assertEquals( 1, rel.removeProperty( key1 ) );
  12.   assertEquals( string1, node1.removeProperty( key2 ) );
  13.   assertEquals( string2, node2.removeProperty( key2 ) );
  14.   assertEquals( string1, rel.removeProperty( key2 ) );
  15.   assertNotNull( node1.removeProperty( arrayKey ) );
  16.   assertNotNull( node2.removeProperty( arrayKey ) );
  17.   assertNotNull( rel.removeProperty( arrayKey ) );
  18. }

代码示例来源：origin: neo4j/neo4j

  1. private void setAndRemoveSomeProperties( GraphDatabaseService graphDatabaseService, Object value )
  2.   {
  3.     Node commonNode;
  4.     try ( Transaction transaction = graphDatabaseService.beginTx() )
  5.     {
  6.       commonNode = graphDatabaseService.createNode();
  7.       for ( int i = 0; i < 10; i++ )
  8.       {
  9.         commonNode.setProperty( "key" + i, value );
  10.       }
  11.       transaction.success();
  12.     }
  14.     try ( Transaction transaction = graphDatabaseService.beginTx() )
  15.     {
  16.       for ( int i = 0; i < 10; i++ )
  17.       {
  18.         commonNode.removeProperty( "key" + i );
  19.       }
  20.       transaction.success();
  21.     }
  22.   }
  23. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void removingPropertyDoesNotBreakPreviouslyCreatedNodePropertyKeysIterator()
  3. {
  4.   // GIVEN
  5.   GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
  6.   try ( Transaction tx = db.beginTx() )
  7.   {
  8.     Node node = db.createNode();
  9.     node.setProperty( "name", "Horst" );
  10.     node.setProperty( "age", "72" );
  11.     Iterator<String> iterator = node.getPropertyKeys().iterator();
  12.     while ( iterator.hasNext() )
  13.     {
  14.       node.removeProperty( iterator.next() );
  15.     }
  16.     tx.success();
  17.   }
  18. }

代码示例来源：origin: neo4j/neo4j

  1. private void changeRandomNode( GraphDatabaseService db, int nodeCount, RandomValues random )
  2. {
  3.   try ( Transaction tx = db.beginTx() )
  4.   {
  5.     long nodeId = random.nextInt( nodeCount );
  6.     Node node = db.getNodeById( nodeId );
  7.     Object[] keys = Iterables.asCollection( node.getPropertyKeys() ).toArray();
  8.     String key = (String) random.among( keys );
  9.     if ( random.nextFloat() < 0.1 )
  10.     {   // REMOVE
  11.       node.removeProperty( key );
  12.     }
  13.     else
  14.     {   // CHANGE
  15.       node.setProperty( key, random.nextValue().asObject() );
  16.     }
  17.     tx.success();
  18.   }
  19.   catch ( NotFoundException e )
  20.   {   // It's OK, it happens if some other thread deleted that property in between us reading it and
  21.     // removing or setting it
  22.   }
  23. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void removeOneOfThree()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "1", 1 );
  6.   node.setProperty( "2", 2 );
  7.   node.setProperty( "3", 3 );
  8.   newTransaction();
  9.   node.removeProperty( "2" );
  10.   newTransaction();
  11.   assertNull( node.getProperty( "2", null ) );
  12. }

代码示例来源：origin: neo4j/neo4j

  1. node.setProperty( key, random.nextValueAsObject() );
  2. random.among( nodes, node -> node.setProperty( random.among( keys ), random.nextValueAsObject() ) );
  3. random.among( nodes, node -> node.removeProperty( random.among( keys ) ) );

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testNodeChangeProperty2()
  3. {
  4.   String key1 = "key1";
  5.   Integer int1 = 1;
  6.   Integer int2 = 2;
  7.   String string1 = "1";
  8.   String string2 = "2";
  9.   Boolean bool1 = Boolean.TRUE;
  10.   Boolean bool2 = Boolean.FALSE;
  11.   Node node1 = getGraphDb().createNode();
  12.   node1.setProperty( key1, int1 );
  13.   node1.setProperty( key1, int2 );
  14.   assertEquals( int2, node1.getProperty( key1 ) );
  15.   node1.removeProperty( key1 );
  16.   node1.setProperty( key1, string1 );
  17.   node1.setProperty( key1, string2 );
  18.   assertEquals( string2, node1.getProperty( key1 ) );
  19.   node1.removeProperty( key1 );
  20.   node1.setProperty( key1, bool1 );
  21.   node1.setProperty( key1, bool2 );
  22.   assertEquals( bool2, node1.getProperty( key1 ) );
  23.   node1.removeProperty( key1 );
  24.   node1.delete();
  25. }

代码示例来源：origin: neo4j/neo4j

  1. if ( random.nextBoolean() )
  2.   node.setProperty( randomKey(), random.nextValueAsObject() );
  3. random.among( nodes, node -> node.setProperty( randomKey(), random.nextValueAsObject() ) );
  4. random.among( nodes, node -> node.removeProperty( randomKey() ) );

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void removeAndAddSameProperty()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "foo", "bar" );
  6.   newTransaction();
  7.   node.removeProperty( "foo" );
  8.   node.setProperty( "foo", "bar" );
  9.   newTransaction();
  10.   assertEquals( "bar", node.getProperty( "foo" ) );
  11.   node.setProperty( "foo", "bar" );
  12.   node.removeProperty( "foo" );
  13.   newTransaction();
  14.   assertNull( node.getProperty( "foo", null ) );
  15. }

代码示例来源：origin: neo4j-contrib/neo4j-apoc-procedures

  1. Object catValue = cat.getProperty(copiedKey, null);
  2.       if (catValue == null) {
  3.         cat.setProperty(copiedKey, copiedValue);
  4.         node.removeProperty(copiedKey);
  5.       } else if (copiedValue.equals(catValue)) {
  6.         node.removeProperty(copiedKey);
  7. node.removeProperty(sourceKey);

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testChangeProperty()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "test", "test1" );
  6.   tx.success();
  7.   tx.begin();
  8.   node.setProperty( "test", "test2" );
  9.   node.removeProperty( "test" );
  10.   node.setProperty( "test", "test3" );
  11.   assertEquals( "test3", node.getProperty( "test" ) );
  12.   node.removeProperty( "test" );
  13.   node.setProperty( "test", "test4" );
  14.   tx.success();
  15.   tx.begin();
  16.   assertEquals( "test4", node.getProperty( "test" ) );
  17. }

代码示例来源：origin: SciGraph/SciGraph

  1. public void dropIndex() {
  2.  if (indexExists()) {
  3.   Transaction tx = graphDb.beginTx();
  4.   // ...cleanup the index.
  5.   int counter = 0;
  6.   for (Node n : graphDb.getAllNodes()) {
  7.    n.removeProperty(IN_LIST_PROPERTY);
  8.    n.removeProperty(OUT_LIST_PROPERTY);
  9.    tx = batchTransactions(tx, counter++);
  10.   }
  11.   // reset the flag.
  12.   metaDataNode.setProperty(INDEX_EXISTS_PROPERTY, false);
  13.   tx.success();
  14.   tx.close();
  15.   logger.info("Reachability index dropped.");
  16.  } else {
  17.   logger.warning("There was no reachability index to drop.");
  18.  }
  19. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testNodeRemoveProperty()
  3.     if ( node1.removeProperty( key1 ) != null )
  4.     node1.removeProperty( null );
  5.     fail( "Remove null property should throw exception." );
  6.   node1.setProperty( key1, int1 );
  7.   node2.setProperty( key1, string1 );
  8.   node1.setProperty( key2, string2 );
  9.   node2.setProperty( key2, int2 );
  10.   try
  11.     node1.removeProperty( null );
  12.     fail( "Null argument should result in exception." );
  13.   assertEquals( int1, node1.removeProperty( key1 ) );
  14.   assertEquals( string1, node2.removeProperty( key1 ) );
  15.     if ( node2.removeProperty( key1 ) != null )

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void addAndRemovePropertiesWithinOneTransaction2()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "foo", "bar" );
  6.   newTransaction();
  7.   node.setProperty( "foo2", "bar" );
  8.   node.removeProperty( "foo" );
  9.   newTransaction();
  10.   try
  11.   {
  12.     node.getProperty( "foo" );
  13.     fail( "property should not exist" );
  14.   }
  15.   catch ( NotFoundException e )
  16.   {
  17.     // good
  18.   }
  19. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testNodeMultiRemoveProperty()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   node.setProperty( "key0", "0" );
  6.   node.setProperty( "key1", "1" );
  7.   node.setProperty( "key2", "2" );
  8.   node.setProperty( "key3", "3" );
  9.   node.setProperty( "key4", "4" );
  10.   newTransaction();
  11.   node.removeProperty( "key3" );
  12.   node.removeProperty( "key2" );
  13.   node.removeProperty( "key3" );
  14.   newTransaction();
  15.   assertEquals( "0", node.getProperty( "key0" ) );
  16.   assertEquals( "1", node.getProperty( "key1" ) );
  17.   assertEquals( "4", node.getProperty( "key4" ) );
  18.   assertTrue( !node.hasProperty( "key2" ) );
  19.   assertTrue( !node.hasProperty( "key3" ) );
  20.   node.delete();
  21. }

代码示例来源：origin: neo4j/neo4j

  1. @Test
  2. public void testAdditionHappensInTheMiddleIfItFits()
  3. {
  4.   Node node = getGraphDb().createNode();
  5.   long recordsInUseAtStart = propertyRecordsInUse();
  6.   node.setProperty( "int1", 1 );
  7.   node.setProperty( "double1", 1.0 );
  8.   node.setProperty( "int2", 2 );
  9.   int stuffedShortStrings = 0;
  10.   for ( ; stuffedShortStrings < PropertyType.getPayloadSizeLongs(); stuffedShortStrings++ )
  11.   {
  12.     node.setProperty( "shortString" + stuffedShortStrings, String.valueOf( stuffedShortStrings ) );
  13.   }
  14.   newTransaction();
  15.   assertEquals( recordsInUseAtStart + 2, propertyRecordsInUse() );
  16.   node.removeProperty( "shortString" + 1 );
  17.   node.setProperty( "int3", 3 );
  18.   newTransaction();
  19.   assertEquals( recordsInUseAtStart + 2, propertyRecordsInUse() );
  20. }

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